Rosemount 2051TG Pressure Transmitter Product Introduction
1. Product Overview
The Rosemount 2051TG Pressure Transmitter, part of Emerson's renowned 2051 series, is a high-performance device designed for precise measurement of gas, liquid, and steam pressures across industrial applications. It integrates advanced sensor technology, robust construction, and user-friendly features to deliver reliable and stable performance even in harsh environments. The 2051TG model specializes in gauge pressure measurement, with a calibration range spanning 0.3 to 10,000 psi, ensuring versatility for diverse process requirements
Key to its design is the single-isolation diaphragm structure, which enhances durability and minimizes maintenance needs. The transmitter's compact and lightweight build (standard weight: 3.9 kg) facilitates easy installation, while its compliance with IEC61508 SIL2 safety certification ensures adherence to stringent industrial safety standards
2. Working Principle
The 2051TG operates using a capacitive sensing mechanism:
Pressure Transmission: Process pressure is transferred through isolation diaphragms and fill fluid (silicone or inert oil) to a centrally located sensing diaphragm.
Diaphragm Displacement: The sensing diaphragm, a tensioned elastic element, displaces proportionally to the applied pressure. For gauge pressure measurement, atmospheric pressure acts as the reference on the low-pressure side.
Signal Conversion: Capacitive plates detect the diaphragm's position, converting the displacement into a 4-20 mA DC output signal. This signal can be further configured using HART communication protocols (via HART 375/475 handheld devices) for real-time monitoring and calibration
3. Key Features
3.1 High Accuracy and Stability
Accuracy: ±0.075% of full scale (FS), ensuring precise measurements critical for process optimization.
Long-Term Stability: Maintains performance over 5 years without recalibration, significantly reducing lifecycle costs.
Temperature and Static Pressure Immunity: Advanced compensation technology negates environmental impacts on measurement accuracy
3.2 Robust Design and Safety
Single Isolation Diaphragm: Constructed from stainless steel or Hastelloy C276, resistant to corrosion and compatible with aggressive media.
Overpressure Protection: Engineered with a unique(corrugation technology) that limits sensor stress during excessive pressure spikes, ensuring longevity after 100,000 overpressure cycles
Intrinsic Safety: Complies with ATEX/IECEx standards for hazardous environments, featuring an industry-leading intrinsically safe power module .
3.3 Advanced Diagnostics and Connectivity
Self-Diagnostic Capabilities: Proactive fault detection for issues like sensor drift, wiring errors, or power failures.
Multi-Protocol Support: Compatible with HART 4-20 mA, FOUNDATION Fieldbus, PROFIBUS PA, and WirelessHART (IEC62591), enabling seamless integration into both wired and wireless networks.
Local Operator Interface (LOI): Simplifies configuration and troubleshooting without external tools .
3.4 Cost-Efficiency
WirelessHART Integration: Reduces installation costs by 40-60% through elimination of complex wiring.
Pre-Assembled Solutions: Factory-configured manifolds and remote seals minimize on-site setup time by 70% .
Parameter |
Specification |
Model |
2051TG Series (e.g., 2051TG2A22A1AB4K5M5, 2051TG1F2B21BM5S5) |
Measurement Type |
Gauge Pressure, Absolute Pressure, Level, Flow |
Pressure Range |
0.3-10,000 psi (general)-62.2 to 62.2 kPa (specific models) |
Accuracy |
±0.075% FS (typical)±0.065% FS (specific models) |
Output Signal |
4-20 mA HART®, FOUNDATION™ Fieldbus, PROFIBUS PA, 1-5 Vdc HART Low Power |
Power Supply |
10.5-55 Vdc (standard)24 V (specific configurations) |
Long-term Stability |
±0.1% of URL per 2 years |
Turndown Ratio |
100:1 |
Process Connection |
1/2-14 NPT, DIN, Autoclave-compatible options |
Isolation Diaphragm |
Stainless Steel, Hastelloy C-276 |
Filling Fluid |
Silicone oil or inert fluid |
Measurement Media |
Liquids, gases, steam, water |
Environmental Rating |
IP67/NEMA 4X (aluminum/stainless steel housing) |
Explosion Proof Rating |
ATEX/IECEx (models with NAMUR or intrinsic safety) |
Protocol Support |
HART 7, FOUNDATION Fieldbus, PROFIBUS PA |
Temperature Limits |
-40°C to 85°C (operating)-40°C to 110°C (storage) |
5. Applications
The 2051TG excels in diverse industries, including:
Oil & Gas: Monitoring pipeline pressure, tank levels, and wellhead operations.
Chemical Processing: Precise control of reactor pressures and distillation columns.
Power Generation: Steam loop pressure management in boilers and turbines.
Water Treatment: Pump protection and filtration system monitoring.
Pharmaceuticals: Sterilization process validation and cleanroom pressure control.
Its compatibility with remote seals and capillary systems allows deployment in high-temperature or corrosive environments, such as cryogenic storage or sulfuric acid handling
6. Model Variations and Configurations
The 2051TG series offers multiple configurations to suit specific needs:
Typical Model Numbers:
2051TG1A2B21AB4K5M5
2051TG2A2B21AB4E5M5
2051TG3A2B21AB4K5M5
Options:
Process Connections: Flange, threaded, or sanitary fittings.
Output Protocols: HART, FOUNDATION Fieldbus, or WirelessHART.
Materials: Exotic alloys for corrosive media (e.g., tantalum, Monel).
7. After-Sales Support
Emerson provides comprehensive service guarantees:
Warranty: 12-year limited warranty on critical components.
Technical Assistance: On-site support within 24 hours for troubleshooting.
Calibration Services: Annual recalibration programs to maintain accuracy.
Training: Free operator training sessions for optimal device utilization.
8. Competitive Advantages
Coplanar™ Platform: Enables integration with primary elements (e.g., orifice plates) and valve manifolds, reducing installation footprint.
Wireless Innovation: Implements IEC62591 (WirelessHART) for scalable, low-maintenance networks.
Sustainability: Energy-efficient design aligns with global decarbonization initiatives.
9. Conclusion
The Rosemount 2051TG Pressure Transmitter combines precision, durability, and innovation, making it a cornerstone for modern industrial automation. Its adaptability to evolving connectivity standards (e.g., WirelessHART) and compliance with stringent safety regulations ensure long-term value for industries prioritizing efficiency and reliability. For detailed specifications or custom configurations, consult Emerson's official documentation or authorized distributors.


Rosemount pressure transmitters are renowned for their robust and innovative packaging solutions, designed to ensure product integrity during transit and storage. Each unit is encased in high-quality, impact-resistant materials that provide exceptional protection against physical shocks, vibrations, and environmental hazards. The packaging incorporates multi-layer cushioning systems, including custom-molded foam inserts and anti-static barriers, which prevent damage from mechanical stress or electrostatic discharge. Additionally, moisture-resistant coatings and vacuum-sealed wraps safeguard sensitive components from humidity, dust, and corrosive elements, making the packaging suitable for long-distance shipping and harsh storage conditions. Rosemount also employs standardized labeling practices with barcodes, QR codes, and hazard symbols to streamline inventory management and compliance with international shipping regulations. The use of eco-friendly, recyclable materials aligns with global sustainability goals, reducing waste while maintaining durability. Furthermore, custom packaging configurations are available for bulk orders or specialized applications, ensuring optimal space utilization and cost efficiency. These meticulous packaging strategies minimize the risk of transit-related failures, ensuring that customers receive fully functional, calibration-ready devices, thereby reducing downtime and operational costs.





Q: How long will you give me the reply?
A: We will reply to you as soon as we see the information.
Q: What is the delivery time?
A: Our delivery time is within 3-7 days after we get your payment;
for large qty mass orders, the time should be confirmed again for you.
Q: How about your package?
A: Do not worry about the package, we have rich experience in packing, and all our package is wooden case package.
Q: How about the payment terms?
A: You can choose T/T.
Q: Do you provide samples?
A: Yes, we have materials in stock to help you to get the samples as soon as we can.
Q: What is the MOQ?
A:1PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with more bigger size orders.